[1,0,4,6,36,100,430,1470,5796,21336,82404,312180, 1203246,4617756,17846686,68974906,267498660, 1038555024,4040525320,15739195680,61399048036, 239788778760,937536139764,3669179504364, 14373144873774,56350223472600,221094286028100]